Effect of lithium and oral thyrotrophin-releasing hormone (TRH) on serum thyrotrophin (TSH) and radioiodine uptake in patients with well differentiated thyroid carcinoma.

What Was Tested

Researchers studied Iodine Radioisotopes in this randomized controlled trial publication.

Group 1 received placebo and TRH, group 2 received lithium and placebo, and group 3 received lithium and TRH.

Who Took Part

According to the abstract, 19 patients were involved.

The age groups tagged for this paper are adults and middle-aged adults, both men and women.

Oral thyrotrophin-releasing hormone (TRH) and lithium were given to patients on follow-up for well-differentiated thyroid carcinoma to see their effect on serum thyrotrophin level (TSH) and radioiodine (I-131) uptake (RAIU).

The study was randomised and doubled-blinded and consisted of a total of 19 patients in 3 groups.

How the Study Was Run

The researchers set it up as a randomized, double-blind and placebo-controlled study.

Because people in this Iodine Radioisotopes study were split into groups at random, differences between the groups are less likely to reflect who happened to join each one.

Neither the patients nor the staff measuring them knew who was on Iodine Radioisotopes, so expectations could not easily colour the readings.

The comparison arm used a placebo, so changes seen with Iodine Radioisotopes could be set against what happens without it.

Serum TSH and RAIU at 24 hours were measured before, and after treatment, with TRH, lithium, and/or placebo.

What Was Measured

Topics PubMed links to this paper include Adenocarcinoma, Follicular, Carcinoma, Papillary, Image Enhancement, Iodine Radioisotopes, Lithium Carbonate, Radionuclide Imaging and Sensitivity and Specificity.

What This Means in Plain Language

The paper is a randomized, double-blind and placebo-controlled study of Iodine Radioisotopes in 19 patients.

With fewer than 40 people, it is a small study, so it is better read as an early signal for further research than as a settled answer.

The publication is from 1995 (Singapore medical journal), a journal based in India.

More context: all human trials.